Beckhoff TwinSAFE logic FB User Manual

Function blocks
Function blocks for TwinSAFE logic components 57
3.5.2 Signal description
Table 3-25: FB MON inputs
Name
Permitted type
Data type
Description
Restart
TwinSAFE-In
FB-Out
Standard-In
BOOL
Manual restart active: When the FB is started or if an
input has requested the safe state, the signal sequence
0->1->0 must be detected at the Restart input before the
safe state of the outputs is exited.
Manual restart not active: This input is not used. Both
starting and exiting the safe state is carried out
automatically, as long as no input requests any longer
the safe state.
MonIn1
TwinSAFE-In
FB-Out
BOOL
1st input channel: The parameterization determines,
whether the input is linked to a break contact (safe state
will be requested by logical 0) or Make contact (safe
state will be requested by logical 1).
MonIn2
TwinSAFE-In
FB-Out
BOOL
2nd input channel, behaves like MonIn1
If the discrepancy time is activated or used, the 1st and
2nd input channels are considered to be the 1st input
pair and a discrepancy time monitoring is carried out
between both channels.
MonIn3
TwinSAFE-In
FB-Out
BOOL
3rd input channel or 1st input channel of the 2nd input
pair, otherwise corresponds with MonIn1
MonIn4
TwinSAFE-In
FB-Out
BOOL
4th input channel or 2nd input channel of the 2nd input
pair, otherwise corresponds with MonIn2
Secure1
TwinSAFE-In
FB-Out
BOOL
Secure1 enabled: Evaluation of the inputs MonIn(x) can
be disabled.
Parameterized as break contact: the inputs MonIn(x) are
ignored if Secure1 is "1". Parameterized as make
contact: the inputs MonIn(x) are ignored if Secure1 is "0".
If the discrepancy time is not 0, Secure1 and Secure2
are considered as input pairs. The discrepancy time
between the two channels is monitored.
Secure2
TwinSAFE-In
FB-Out
BOOL
Secure2 is the 2nd channel of the input pair and
otherwise corresponds to Secure1.
EDM1
TwinSAFE-In
FB-Out
Standard-In
BOOL
EDM1 is the feedback loop for the non-delayed output
channel (MonOut). If this input is parameterized as
active, the safe state of the outputs will only be exited,
when the EDM1 supplies the "1" signal.
EDM2
TwinSAFE-In
FB-Out
Standard-In
BOOL
EDM2 is the feedback loop for the delayed switching of
the output channel (MonDelOut). If this input is
parameterized as active, the safe state of the outputs will
only be exited, when the EDM2 supplies the "1" signal.

Beckhoff TwinSAFE logic FB Specifications

General

Brand	Beckhoff
Model	TwinSAFE logic FB
Category	Industrial Electrical
Language	English